Update: Fulton County spokeswoman April Majors said at noon, "All has been going smoothly." More information will follow from a morning briefing held by Registration and Elections Director Richard Barron.

Today's primary runoff includes state and local races.

The new Fulton County Commission District 5 seat is up for grabs between Democrats Marvin S. Arrington Jr. and Brenda J. Muhammad, both residents of Atlanta.

In the primary, the candidates knocked out their three competitors, with Arrington earning 5,713 votes, or 46 percent, and Muhammad garnering 3,889 votes, or 31 percent.

The winner will be unopposed on Election Day, Nov. 4.

The U.S. Senate seat from which Saxby Chambliss is retiring is contested by Republicans Jack Kingston and David Perdue for the right to face Democrat Michelle Nunn on Nov. 4.

Also on the Republican ballot, state school superintendent contenders are Michael Buck and Richard Woods.

On the Democratic ticket, Alisha Morgan faces Valarie Wilson.

Winners in each contest will vie for the seat incumbent John Barge left to run for governor.

A nonpartisan race to replace Fulton County Superior Court Judge Cynthia Wright, who is retiring, will pit Jane Barwick against Shelitha R. Robertson.

Polls will be open from 7 a.m. to 7 p.m.

Visit the South Fulton Neighbor page for election results as they come in.

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